Finding the Fourth Proportional to 135,603.65, 187,115.74 and 75,173.75
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Solution
The fourth proportional to 135,603.65, 187,115.74 and 75,173.75 is: 103,730.18
Step by Step Solution
- Step 1: Write the proportion equation
135,603.65 : 187,115.74 = 75,173.75 : x - Step 2: Convert to fraction form
135,603.65/187,115.74 = 75,173.75/x - Step 3: Cross multiply
135,603.65x = 187,115.74 × 75,173.75 - Step 4: Simplify right side
135,603.65x = 14,066,190,736.31 - Step 5: Solve for x
x = 14,066,190,736.31/135,603.65 - Step 6: Final answer
x = 103,730.18
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.